Dialer: Remove GoogleForwardLookup

* It doesn't work anymore
* https://webmasters.googleblog.com/2015/07/update-on-autocomplete-api.html
  and
  https://developers.google.com/maps/documentation/places/web-service/search-nearby
* We'd need an API key now and rewrite the whole thing - we don't have
  the first and don't do the latter
* Change default forward lookup to OSM

Change-Id: Ibed79a12b6c2048b90edead3abd34b642aa9feab